The book is now available! 8353
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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8353 of the first million positive integers each has a digital sum that equals the digital sum of its square. [Gaydos]


  Submitted: 2015-12-08 17:55:11;   Last Modified: 2018-05-04 20:08:45.

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